I love the old building, Des, and your processing is excellent.
Recently, I've been rethinking the whole crop-or-not-to-crop thing, and applying it to my own pics and occasionally to other pics- to test my thinking. Please excuse me for fiddling with your image, and I'll pull it if you want me to. I did some cropping and cloning and ended up with this:
What do you think?
Charlie

Charlie - Your cropped version is almost exactly like the first version I tried (minus the cloning). I like it. It really strengthens the shapes. In the end, I thought the picture needed a bit more of a horizontal format (which is also slightly cropped) and some context, but you've encouraged me to "play" some more. Thanks.

wonderful composition and sepia tones! The cropped version seems to give the composition more focus than the first...as in my eyes clearly see patterns and the architecture without the building in back